Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 85 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
2. 2.🛟 Which of these floats on water? (a) a dry leaf (b) an iron nail (c) a coin (d) a metal key
3. 3.🔍 Which is the odd one out? (a) an iron nail (b) a steel spoon (c) a metal key (d) a feather
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the amount of clay (c) the shape of the clay (d) whether it floats
5. 5.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
6. 6.True or false: a coin sinks in water. (a) False (b) True
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) yeast
8. 8.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
9. 9.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
10. 10.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
11. 11.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the tub of water (b) whether it floats (c) the amount of clay (d) the shape of the clay
13. 13.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
15. 15.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
17. 17.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it melts (d) it floats higher
18. 18.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: a glass marble sinks in water. (a) False (b) True
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
22. 22.🔍 Which is the odd one out? (a) a piece of thermocol (b) a pebble (c) an empty capped bottle (d) an ice-cream stick
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) yeast (c) a battery cell (d) a tub of water
24. 24.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
25. 25.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
26. 26.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
27. 27.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
29. 29.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it bounces up (d) it floats
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) yeast (c) a balloon (d) a towel for spills
31. 31.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it turns white (d) it sinks
32. 32.True or false: an ice-cream stick floats on water. (a) True (b) False
33. 33.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
34. 34.🛟 Which of these sinks in water? (a) a feather (b) a cork (c) a pebble (d) a ping-pong ball
35. 35.True or false: a coin floats on water. (a) True (b) False
36. 36.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we measure it (b) we change it (c) we keep it the same
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) water is sticky (d) ice is magnetic
39. 39.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it sinks faster (d) it turns to stone
40. 40.🛟 Which of these floats on water? (a) an iron nail (b) a steel spoon (c) a pebble (d) an ice cube

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